> > >At this point, I am trying to guess mite populations from a natural drop. > Using a > 100 multiplier This is one of the problems with natural drop--in order to use it to predict the total mite population, you need to use a multiplier, which varies greatly depending upon the amount of brood and the season. That is why I attempted to work such a conversion into my Excel spreadsheet, by scouring the literature for actual data in which natural drop was compared to measured total mite populations. You may find it useful... -- Randy Oliver Grass Valley, CA www.ScientificBeekeeping.com *********************************************** The BEE-L mailing list is powered by L-Soft's renowned LISTSERV(R) list management software. For more information, go to: http://www.lsoft.com/LISTSERV-powered.html Guidelines for posting to BEE-L can be found at: http://honeybeeworld.com/bee-l/guidelines.htm